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Add 40/42 and 6/18

40/42 + 6/18 is 9/7.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 18 is 126

    Next, find the equivalent fraction of both fractional numbers with denominator 126
  2. For the 1st fraction, since 42 × 3 = 126,
    40/42 = 40 × 3/42 × 3 = 120/126
  3. Likewise, for the 2nd fraction, since 18 × 7 = 126,
    6/18 = 6 × 7/18 × 7 = 42/126
  4. Add the two like fractions:
    120/126 + 42/126 = 120 + 42/126 = 162/126
  5. 162/126 simplified gives 9/7
  6. So, 40/42 + 6/18 = 9/7
    In mixed form: 12/7

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